Business machine



Aug. l2, 1947. R.w.P1TMAN 2,425,490

BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 1 INVENTOR RIC/4R0 h4 PIT/VAN BYJ a ATTORNE;

` .Amg. 12, 1947. R. w. PITMAN 2,425,490l

.BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 2 INVENTOR R/C// M P/T/VA/V ATTORNEY Aug. 12, 1947. R, W, PWMAN' 2,425,490l

BUS INESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 3 l AORNEY A118- 12, 1947 v R. PrrMAN 2,425,490

BUSINESS MACHINE V Original Filed NOV. 21, 1941 19 Sheets-Sheet 4 INVENTOR Aug. l2, 1947.` v R. w. PITMAN 2,425,490

BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 5 INVENTOR AUCH/HPO M //VA/V KVM ATTORNEY f AU@ 12, 1947. R. w. PITMAN 2,425,490

i BUSINESS MACHINE Original Filed Nov. 21. 1941 19 Sheets-Sheet 6 INVENTOR RICHARD M/TMAN ATTORNEY Aug. l2, 1947.A 1 R.w.P1TMAN 2,425,490

BUSINESS MACHINE original Filed Nov. 21, 1941 19 sheets-Sheet 7 BY O 6 ATTORNEY:

Aug. 12, 1947. I R. w. PITMAN 2,425,490

` BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 8 AccouNTs RecslvAaLe o n O BAL'N DAT: nzscnmrlou uzelf cREmr QALANcg t z .i .o M35, www 2 581s 1s 'h 569014 1a-16 128 6 4 .au15 16 1- 1 v a9 41 5124 as. ..15 5124 as z-is 1261 Ial1 um su ,.nz.. vsn s?. a- 1 2.515 o0 101146* 1f-,w3 on 4a @-15 1 511s as mi 51* mq651` 4- 1 9902 1s ,5ans an f ff- 1 Le@ MJ Cea/1%@ 'i INVENTOR Ava/Am M /r/MA/ ATTORNEY Am@ @.29 w@ R. w.. PWMAN BUSINESS MACHINE original Filed Nov. 21, 1941 l@ sneetswsnea 9 .Aug-gv 2,7 l R, W. PKTMAN 425mm BUSINESS MACHINE Original Filed NOV. 2l, 3.941 19 Sheets-Sheet l0l f O :w L l/ "a i o ATTORNE ug, i2, i947.

R. w.'-P1TMAN BUS INESS MACHINE 19 sheets-sheet 11 Original Filed Nov. 21,` 1941 INVENTOR /P/C/MAD M PHWAN I. m IU o n ilh A wf wn Aug. 1 2, 1947. R, w, P11-MAN 2,425,490

BusNEss MACHINE 19 Sheets-Sheet 12 original Filed Nov. 21. 1941 Aug. 12, 1947. R. w. PiTMAN i 2,425,490

BUS INES S MACHINE Original Filed Nov. '21, 1941 19 Sheets-Sheet 13 4% ATTORN EY Aug l2, 1947 R. w. PITMAN l 2,425,490y

' BUSINESS MACHINE Original Filed Nov. 21, 1941 19 Sheets-Sheet 14 INVENTOR R/CHA/PD hl. P/TMA/V BY' l A ORNEY Aug. 12, 1947. y R. w. PrrMAN 2,425,490

` BUSINESS MACHINE Original Filed Nov. 2l, 1941 19 Sheets-Sheet l5 ATTORNEY Aug. 12, 1947. R. w. PITMAN BUSINESS MACHINE original Filed Nov.' 21, 1941 19 sneeis-sheet 1e ATTORN EY Aug. 12, 1947. R. w. PITMAN BUSINESS MACHINE 19 Sheets-Sheet 17 Original Filed Nov. 21,1941

INVENTOR Aug. l2, 1947. R.A w. PITMAN 2,425,490

BUSINESS MACHINE Original Filed Nov. 2l, 1941 19 Sheets-Sheet 18 Aug. 12,' 1947. l R. w. PITMAN v 2,425,490

BUSINESS MACHINE original Filed Nov. 21., 1941- 19 sheets-sheet 19 ATTORNEY Patented Aug. 12, 1947 BUSINESS MACHINE Richard W. Pitman, Laverock-Hillcrest, Pa., as-- signor to Underwood Corporation, a corporation of Delaware Original application November 21, 1941, Serial No. 419,889. Divided and this application April 28, 1944, Serial No. 533,220

4 Claims.

This application is a division of my application Serial No. 419,889, led November 2l, 1941, now Patent No. 2,405,268, dated August 6, 1946.

The inventions in said application relate to business machines usable for computing and keeping a ledger record of progressive transactions and balances of an account.

The present invention deals with recording means for recording a balance on a ledger sheet in a form which may be read or sensed by sensing means. Means cooperate with the sensing means for entering the balance in a register into which any transaction against the balance is also entered. The register therefore will contain a new balance which in turn may be recorded on the ledger sheet by said recording means and later picked up and reentered in the register in respect to further transactions.

A typewriter mechanism is preferably used in order to provide for simple selective operation of the necessary types. Another advantage of using typewriter mechanism is that in accordance with its typing one character at a time, there may be simplification of the recording-means and the sensing-means in that these may also function for one character at a time in coordination with the step-by-step feeding movements of the typing carriage.

By way of illustration, the invention is herein shown applied to a combined typewriting and computing machine of the Underwood-Hanson class, exemplified iiyH. L. Pitman Patent No. 2,160,487, dated May 30, 1939 and I-I. L. Pitman Patent No. 2,192,355, dated March 5, 1940.

My copending application Serial No. 102,389, led September 24, 1936, now Patent No. 2,278,- 118, dated March 31, 1942, also concerns a combined typewriting and computing machine adapted for automatically picking up and reentering old balances, and the present disclosure concerns novel and important features of improvement.

Each numeral of a balance is represented by distinctive perforations, in the ledger sheet, based on a combination scheme so that in any case the perforations will be within a small area of the sheet.

A present improvement lies in improving the combination scheme of perforations to the end that the areas of perforation for successive characters may be expanded to provide for spreading the individual perforations representing a character. This conduces to reliable operation of the sensing means.

Another improvement lies in arranging the perforating mechanism so as to dispose the perforations in the ledger sheet well to one side of the corresponding typing of the balances instead of having the typing and perforations interspersed vertically. One resulting advantage is that the punching and sensing means may be disposed so as not to obstruct visibility of the new balance on the ledger sheet while such new balance is being typed. Another advantage is that disposition of the punching and sensing mechanism relatively to other parts of the machine may be facilitated.

The immediate object of the instant case is to devise a novel punching arrangement to punch -a sheetwhich is stepped in letter spacing.

Another divisional application, Serial No. 520,- 983, filed February 3, 1944, contains claims on the recording and sensing features in relation to the typewriter mechanism alone. Still another divisional application, Serial No. 524,1991/2, filed February 28, 1944, contains claims relating mainly to the sensing mechanism.

The foregoing and other features, objects, and advantages of the invention will be understood from the following description and accompanying drawings of a preferred embodiment.

In said drawings:

Figure 1 is a perspective of a combined typewriting and computing machine embodying the invention.

Figure 2 is a cross-sectional side elevation of said machine.

Figure 3 is a perspective showing use of a lockoutclevice for the punching and sensing head.

Figure 4 is a perspective of the typing carriage and the punching and sensing mechanism.

Figures 5, 6 and '7 are respectively a top plan view, a front elevation, and a side elevation of the punching and sensing mechanism.

Figure 8 is a cross-sectional side View of a stack of contact bars of the sensing mechanism.

Figure 9 is a rear view perspective of foundation structure of the punching and sensing head.

Figure 10 is a front View perspective of supporting structure on the carriage for the head.

Figure 11 is a front view perspective of the foundation structure of Figure 9.

Figure 12 is a perspective of the sensing pin mounting.

Figure 13 is a perspective of the carriage and devices for stopping the punching and sensing head in punching and sensing positions.

Figure 14 is a rear view perspective of a receptacle for punching scrap.

Figures 15 and 16 are respectively a side ele- 

